A fast one
Trying to scam, trick, or con someone so bad they don’t even realize it until they’re broke and mad.
He said he was my friend, then he took my money and said it was a 'loan.'
She said she was helping me, then she took my car and said it was a 'gift.'
My brother said he was going to help me, then he took my money and said it was a 'tip.'